The Dynamics Modal Study Of Continuous Production Gas Lift Plunger

Plunger lift is one of the widespread application draining water gas recoverymethods present．The plunger lift draining water gas recovery craft use a plunger as aseal contact surface to inhibit the gas crossfire and the liquid recedes,as to enhancesthe efficiency of the gas lift．The production process of the conventional plunger liftcraft is not continuously,because of the huge resistance during the downwardperiod,we must close the well let the plung whereabouts to the bottom of the well,therefore causes the technique of production flow to be complex and influence theproduction efficiency．In view of the flaw of the conventional plunger lift craftsome scientific research workers proposed continuously production plunger gas liftcraft without well close,the key point of the craft is used a special plunger namedumbrella plunger,this paper conducts the research to the umbrella plunger lift craftbased on this．Research the plunger's movement situation in the well, analyzes thestress situation when the plunger moves in the well, establish the dynamic model ofthe continuously production umbrella plunger gas lift and programming solution tothe model equation．Finally selection some gas well's actual production data carrieson the computation, so to analysis the umbrella plunger gas lift's characteristicparameter,and find out the sensitive parameter．Through sensitive analysis we canfind several important parameters which affect the plunger downward is the speed ofthe gas,the plan area when the umbrella plunger closed, the plunger quality,the gasfluid ratio．Regarding a development well we can designs the reasonable plungerquality and the plunger plan area after the production data determination,so that theplunger can whereabouts to the bottom of the well In the well maintains opencondition,also can realize the continuous production plunger gas lift craft．The technical key point of the craft has solved now,but also needs to undergo the massiveexperimental study In the scene promotion application and unceasing optimizedconsummation the umbrella plunger's structure．...